#include <stdio.h>
#define PI 3.141f

int 
main(void)
{
	int radius;
	float volume;
	
	puts("Enter the radius of the sphere:");
	scanf("%d", &radius);
	
	volume = (4.0f/3.0f)*PI*(radius*radius*radius);
	printf("Volume: %0.3f\n", volume);

	return 0;
}
